• Thrust washers are not technically washers, they’re bearings that happen to look like washers.
• They are long – wearing bearings that resolve play and transmit axial forces in rotating mechanisms. 
• It stops the play of the crank shaft and the thickness of thrust washer is selected as per gap.      
• These washers are pressure die cast from aluminium alloy and heat treated; important considerations include flatness and parallelism requirements, surface finish and tough hardness for high wear applications such as brass type diesel oil engines, transmissions, power take-offs , pumps, axle assemblies, gear boxes and special applications. 
• Shapes could be circular and semi circular; the manufacturer can also make in bulk as per customer’s specifications for regular requirements.